1 # Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
2 # This file is part of the GNU C Library.
4 # The GNU C Library is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU Library General Public License as
6 # published by the Free Software Foundation; either version 2 of the
7 # License, or (at your option) any later version.
9 # The GNU C Library is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 # Library General Public License for more details.
14 # You should have received a copy of the GNU Library General Public
15 # License along with the GNU C Library; see the file COPYING.LIB. If not,
16 # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 # Boston, MA 02111-1307, USA.
20 # Rules for making a subdirectory in the GNU C library.
21 # Each subdirectory Makefile defines some variables and includes this.
24 This makefile requires GNU Make.
27 all: # Don't let the default goal come from Makeconfig.
32 Each subdirectory makefile must define the `subdir' variable.
34 # This is benign and useless in GNU make before 3.63.
35 export subdir := $(subdir)
37 # This is the default target; it makes the library and auxiliary programs.
41 ifeq ($(build-programs),yes)
42 others: $(addprefix $(objpfx),$(extra-objs) \
43 $(install-lib) $(install-bin) \
44 $(install-rootsbin) $(install-sbin))
46 others: $(addprefix $(objpfx),$(extra-objs) \
50 ifneq "$(findstring env,$(origin headers))" ""
54 ifneq "$(findstring env,$(origin generated))" ""
58 ifneq "$(findstring env,$(origin common-generated))" ""
62 ifeq "$(strip $(headers))" ""
63 ifneq "$(wildcard $(subdir).h)" ""
64 override headers := $(subdir).h
71 subdir_lib: lib-noranlib
73 # Some subdirs need to install a dummy library.
74 # They can use "$(objpfx)libfnord.a: $(dep-dummy-lib); $(make-dummy-lib)".
75 dep-dummy-lib = $(common-objpfx)dummy.o
77 $(AR) cr$(verbose) $@ $<
79 $(common-objpfx)dummy.c:
81 echo 'void __dummy__ (void) { }' > $@
82 $(common-objpfx)empty.c:
84 common-generated := $(common-generated) dummy.o dummy.c empty.c empty.o
86 # This makes all the auxiliary and test programs.
89 ifeq ($(build-programs),yes)
90 others: $(addprefix $(objpfx),$(others) $(extra-objs))
92 others: $(addprefix $(objpfx),$(extra-objs))
94 ifeq ($(cross-compiling),yes)
95 tests: $(addprefix $(objpfx),$(tests) $(test-srcs))
97 tests: $(tests:%=$(objpfx)%.out)
100 ifeq ($(build-programs),yes)
101 ifneq "$(strip $(others) $(tests) $(test-srcs))" ""
102 $(addprefix $(objpfx),$(others) $(tests) $(test-srcs)): %: %.o \
103 $(sort $(filter $(common-objpfx)libc%,$(link-libc))) \
104 $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
108 ifneq "$(strip $(tests) $(test-srcs))" ""
109 $(addprefix $(objpfx),$(tests) $(test-srcs)): %: %.o \
110 $(sort $(filter $(common-objpfx)libc%,$(link-libc))) \
111 $(addprefix $(csu-objpfx),start.o) $(+preinit) $(+postinit)
116 ifneq "$(strip $(tests) $(test-srcs))" ""
117 # These are the implicit rules for making test outputs
118 # from the test programs and whatever input files are present.
119 $(objpfx)%.out: %.args $(objpfx)% %.input
120 $($*-ENV) $(built-program-cmd) `cat $(word 1,$^)` < $(word 3,$^) > $@
121 $(objpfx)%.out: %.args $(objpfx)%
122 $($*-ENV) $(built-program-cmd) `cat $(word 1,$^)` > $@
123 $(objpfx)%.out: %.input $(objpfx)%
124 $($*-ENV) $(built-program-cmd) < $(word 1,$^) > $@
125 $(objpfx)%.out: /dev/null $(objpfx)% # Make it 2nd arg for canned sequence.
126 $($*-ENV) $(built-program-cmd) > $@
129 .PHONY: distclean realclean subdir_distclean subdir_realclean \
130 subdir_clean subdir_mostlyclean
131 subdir_mostlyclean: mostlyclean
133 subdir_distclean: distclean
134 subdir_realclean: realclean
138 .PHONY: subdir_echo-headers
139 subdir_echo-headers: echo-headers
141 .PHONY: subdir_echo-distinfo
142 subdir_echo-distinfo:
143 @echo $(addprefix +header+,$(headers) $(filter %.h,$(distribute))) \
144 $(addprefix +nodist+,$(generated) $(common-generated) $(dont_distribute))
146 # We want to install everything except the library itself, but update all
147 # our portions of the library because the parent make will install it later
148 # (likewise the stubs file).
149 .PHONY: subdir_install
150 subdir_install: install-no-libc.a lib-noranlib stubs
152 .PHONY: subdir_TAGS subdir_dist
156 # Convenient target to update all the generated source files.
158 generated: $(addprefix $(common-objpfx),$(common-generated)) \
159 $(addprefix $(objpfx),$(generated))
161 ifndef libc.so-version
162 # Undefine this because it can't work when we libc.so is unversioned.
163 static-only-routines =
166 ifdef static-only-routines
167 # These routines are to be omitted from the shared library object,
168 # so we replace the PIC objects for them with the empty object file.
169 $(static-only-routines:%=$(objpfx)%.so): %.so: $(common-objpfx)empty.o